Sonia Delaunay Artist: Delaunay (Unsigned) Title: Forms Medium: Pochoir Size: 12 x 9 inches Year: 1956 Edition: Book edition Publisher: XXth Siecle Reference #: XXth Siecle no. 7, 1956 , page 80 Artist: Calder (Unsigned) Title: XXth Siecle, no. 37, page 7 Medium: Lithgograph Size: 12 x 9 inches Year: 1971 Edition: Book edition Publisher: XXth Siecle, Paris Reference #: XXth Siecle no. 37 , page 7, 1971